Portable power device



Patented Oct. 25, 1921.

2 SHEETSSHEET I.

: \HVEHTR ATTORNEY.

c. F. LINDGREN. v

PORTABLE POWER DEVICE- 0. 1,394,564. Patented Oct. 25, 1921.

2 $HEET$SHEET 2.

UNITED STATES CHARLES E. LINDGREN, OF DULUTH, MINNESOTA.

PORTABLE POWER DEVICE.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Application filed September 3, 1920. Serial No. 408,042.

To all whom it may concern: 1

Be it known that I, CHARLES F. LINDGREN, a Y citizen of the United States residing at Duluth, in the county ofSt. Louis and State of Minnesota, have invented certain new and useful Improvements in Portable Power Devices, of which the following is a specification,'reference being had therein to the accompanying drawing.

This invention relates to a portable, electrically operated, trimming and grinding machine and has special reference to a device of this character for-use in smoothing of]? and trimming meat blocks and the. like, the grinding part of the machine being available for the sharpening of various tools.

The principal object of the invention is to produce a practical and eiiicient device of this character. Another object is to produce a novel form of handles for the convenient manipulation of the device.

Still other objects and advantages of the invention will appear in the further description thereof.

Referring to the accompanying drawings in which like reference characters indicate like parts:

Figure 1 is a front elevation of the machine as it appears during its manipulation as a. trimmer;

Fig. 2 is a top plan view of Fig. 1;

Fig. 3 is a transverse vertical section taken on the line 3-3, Fig. 2; and

Fig. 4 is a bottom plan view, looking upwardly.

1 represents a suitable which the electric motor 2 is suspended by the screw bolts 3, which are screw threaded through the pivotal eye-bolts 4. The lower ends of the bolts 3 are mounted and set within suitable sockets or holes in the base 5 of the motor 2 so as to permitof slight adjustment of the motor as indicated in dotted ines, Fig. 3, which is desirable for the purpose of beveling the edge of a meat block or board, as is sometimes done. The base 5 of the motor is further attached to the base 1 by suitable through bolts 66 which pass through the slots 77 within the base and are-provided with the nuts 8-8 which may be tightened to hold the motor in any adjusted position.

Upon the sides of the base 1 are for- Wardly projecting handles 99, one upon upright base upon either side of the base, said handles being preferably oval in cross-section for a convenient and secure hold by the operator. These handles are permanently attached to the base and are designed to support the mechanism in the most convenient manner possible, as illustrated in Fig. 1.

A guiding shelf, or auxiliary base 10, extends at right angles to the base 1 and is securely fixed thereto. Centrally of this shelf is a semi-circular cut-away portion 11, through which the cutting knife or saw of the device extends, the cutting of the latter being controlled by the auxiliary base as it rests upon the surface being operated upon, and, as is obvious, knives or saws may be employed for the different classes of work to be accomplished. One form of saw is indicated at 12, Fig. 1, and at 13, Fig. 4, they being securely attached to the depending end of the armature shaft 14 of the motor.

Upon the opposite end of this armature shaft is mounted anabrasive wheel 15, such as emery or the like, for use in sharpening or grinding as desired.

have shown at 16 small spirit levels, which may be attached to the edges of the upright base for use as guides in keeping the device vertical, and, at 17, is a similar level for maintaining the device in such position.

Having thus described my what I claim and ters Patent, is:

1. A device of the class described comprising an L-shaped supporting member, a motor adjustably mounted upon the face of the upright portion of the supporting member, a cutter carried on the shaft of the motor and operating substantially flush with the face of the horizontal portion of the supporting member and projecting beyond one side of same, and a handle adjacent each side'of the motor fixed to the upright portion of the supporting member and extending outwardly in the same direction with the horizontal portion of the supporting member, substantially as described.

2. A device of the character described comprising an L-shaped supporting member, an electric motor vertically and angularly adjustably mounted upon the upright portion of the supporting member, a cutter carried by the motor and operative substaninvention, desire to secure by Letvarious forms of cutting tially flush with the face of the horizontaiL In testimony whereof I hereunto afiix my portion of said inember and? plifjegfiing besignature in the presence of two Witnesses. yon one s1 e 0 same, an a an e upon T either side of the motor extending for- (JHARLE'S LIL DGREN' 5 wardly, parallel with the horizontal portion Witnesses:

of the member, and securely fixed t0 the ver- B. L. CoWEN, tical portion thereof. S. C. BRONSON. 

